html,body{
    background: #f1f1f1;
}
.nav-wrap,.article-list {
    background: #fff;
}
.article-list {
    box-sizing: border-box;
    padding: 25px;
    margin-top: 15px;
}
.article-title {
    font-weight: 600;
}
.user-info {
    box-sizing: border-box;
    padding: 15px;
    background: #fff;
    margin-top: 15px;
}